Pump



Nov. 24, 1925- H. M. GREEN PUMP Filed June 22, 1922 ZSheetS -Sheet 1 3 H m r m/ fi 4/ e7 H m P m m w 3 M w \w\ M" 2 7 2 w z A/AA/ 2 6 3a 76 1 A u PM a Patented Nov. 24, 1925.

UNITED STATES- 1,563,082 PATENT OFFICE.

HENRY M. GREEN, E Eos ANeELEs, CALIFORNIA, ASSIGNOR TO EARL P. HOPKINS,

' or coUNcIL ELUEEs, IOWA;

PUMP.

Application filed June 22, 1922. Serial No. 570,248.

To all whom it may concern: Be it known that I, HENRY M. GREEN, a citizen .of the United States, residing at Losv Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Pumps, of which the following is a specification;

This invention relates to pumps and more particularly to deepwell pumps. It is one of the important objects of the present invention to provide a means for efiiciently packing the plunger of a deep well pump. Another object is to providea means for automatically increasing the compression of the plunger packing of the pump in the well, and therefore toehminate the necessity of pullingthe pump from the well to pack the same.

Another object is to provide an eflicient,

simple, substantial and practicable form of plunger packing.

Other objects will be made manifest in the following specification of an embodiment of the invention illustrated in the accompanying drawings, in which Figure 1 is a longitudinal central section and side elevation of the improved pump.

Fig. 2 is a longitudinal central and partial elevation of the follower locking means of the pump plunger.

Figs. 3-3 and 3 represent, when 6 bined, a central longitudinal sectional view illustrating in detail'the plunger elements of the pump. w Fig. 4 is a cross section on line 4'4 of Fig. 3 a

Fig. 5'is a cross section on line 55 of Fig. 3

Fig. 6 is a cross section on line 66 of Fig. 3 Fig. 7 is a cross section on line 7-7 of Fig. 8 1

The illustrated embodiment of the invention discloses the usual exterior pump tube 2 of which a lower section only is shown and which has at its upper end a coupling 3 indicating ,means for connecting successive On the foot end sections of the pump tube. \of the section 2 is a shoe 4: within which is arranged a. valve cage 5 carrying a valve seat 6. A suitable valve closure may consist of the inlet valve ball 7 movable downwardly to close the inlet through the seat 6. It is understood that any suitable pump om- I ized.

The plunger, in the present invention, is attached to a lower section 10 of a sucker tube and foot valve structure may be utilrod which is shown as connected to the I threaded in a reducing coupling 19 which is internally threaded and is attached to the adjacent threaded end of an upper plunger pipe 20. The lower end of the reducing member 19 is provided with a downwardly convergent exterior peripheral surface 19 which acts as a spreader for the contiguous portion of a sleeve of compressible packing material 21 which surrounds the upper pipe 20, and when under compression is forced out against and reciprocates upon the inner surface of the pump tube 2.

The lower end of the upper pipe 20 is externally threaded at 20 and receives a cylindrical member 22 internally threaded to receive the threads 20 and having an upper reduced and threaded end 22 upper reduced threaded end 22 of the member 20 (which forms a guide) there is secured what may be termed the plunger- This extends upwardly well toshell 23. ward the lower end of the spreader reducer Upon the 19 and, therefore, forms about the upper pipe 20 an annular chamber 28 in which the packing medium 21 isdisposed. The packing is exposed. over the upper end of the plunger shell 23 so as to be forced outwardly against the tube surface.

The cylindrical guide member 22 is shown in Fig. 3 as having its lower inner bore threaded at 22 to receive the contiguous threaded end of a lower plunger pipe section ,24 which is of suitable length'and has a considerable portion of its lower exterior surface peripherally grooved to form upwardly inclined ratchet teeth 24. Just below the ratchet teeth, the lower pipe or i Q 7 I cause lock pipe, as it may be termed, is provided with exterior screw threads 24* to receive a lock collar 26.

The bores of the lock collar, the lock pipe 24, the guide member 22, and the upper pipe 20 are shown'as of substantially equal diameters. The coupling part 19 flares inwardly at its a jiachment with the nipple 17 and this is provided with a diameter greater than the diameter of the plunger pipe sections.

The lower end of the guide member 22' is externally threaded to receive the contiguous end of the cylinder or plunger shell 27 which extends downwardly to a point about even with the locking collar 26 on the lower end of the lock pipe 24. The train of elements described as comprising the plunger are all rigidly secured together so as to operate as a unit, and on the downward stroke thereof water trapped above the foot valve 7 will flow upwardly through the upper. upwardly opening valve 13 in the plunger head, and, conversely on the reverse of the firststroke of the plunger the water trapped above the upper valve 13 will be elevatedand a new charge will be drawn into the foot section below the plunger. I v

The inner lock 'pipe 24 and the outer cylinder or shell 27 form therebetween an annular elongated chamber.

For the purpose of securing the automatic compression and at the same time expansion of the packingmedium 21 so asto take up for wear of the same and maintain a tight running joint as betweeuthe exposed portion of the packing and the pum tube,

as shown in Fig. 3, means are provi ed for applying at suitable intervals a rammi or compressing effect upon the packing. his ramming is accomplished in the following manner: 7

Operating in the chamber 23 :in which the packing is placed in the shell123,,there is arranged a deep annular collarlor ram 30 which is disposed just above the guidemember 22 in which latter there is arranged to reciprocate a plurality of ram rods 31, the upper ends of which are suitabl fixed in the ram 30. The ram rods own'frol'n the guide 22 into. the chem If formed between the inner pipe 24 and theajplunger shell 27, and the lower ends of theliods are screwed into or otherwise attached to an annular member 32 forming a rod carrier reciprocable within the shell 27. f

Below the rod carrier there is rovided a cylindrical member 33 forminga ead for a follower device reciprocating'inthe shell '27. The'lower end of the head- 33 is externally 'threadedto receive the adjacentthreaded end of a cylindrical member 3a hereinafter termed the pawl bearer.

This pawl bearer element is provided with v valve 7 and will are supported by inwardly extending seats or shoulders 34* provided in the pawl bearer 34. The lower portion of the pawl bearer is externally threaded to receive a sleeve or follower 37 fitting within the shell 27 and surrounding the lock collar 26, the function of the latter being to retain the pawl bearer and follower parts in position upon the inner pipe 24 in the event that the pawls 35 are not in coactive engagement with the ratchetteeth 24?".

The lower end of the follower sleeve 37 is provided with an end piece or fitting The operation of the follower. and the ram is substantially as follows:

After a pump tube has been lowered into a well to the desired position, the pump plunger with its associated elements are assembled and as the plunger is lowered into the well the follower parts including the pawl bearer 34 are supported in substantially the lowermost position by the engagement ofv the lower end of the pawl bearer 34 with the flange or upper shoulder of the retaining onlooking collar 26, secured to the lower end of the plunger pipe 24:."The plunger, being lowered into the upon the inner surface of the casing and then the plunger is lowered away into the tube; The plunger will be lowered to its normal operating osition above'the fool-J e operated for such a period of time as may be possible before the packing material 20 becomes ineffective to prevent leak.

Undue looseness of the packing becoming noticeable, the lunger is then lowered until the end inem er 38 of the follower tube 37 engages a shoulder-as 5? of the foot valve cage, and thisacting as an abutment retards furthermovement of the follower sleeve 37 but -does not'interfere with a further downward movement of theorganized plunger forming elements; Therefore, the downward'movement of the plunger proper serves by means of the follower to act by means of: e head thereof against the rod carrier 32 which is held stationary together with: its ram 30while the plunger moves slightly further down. Thisslight move- "ment places the packing material 21 under compression and eliminates the looseness produced by wear of the exposed part of the packing upon the tube 2. The plunger is lowered in vsuch action just sufliciently to gradually increase the compression of the packing and thrustthe same firmly outwardly to eliminate looseness at the joint. l During the relative downward movement 7 of the plunger parts as to the now stationary follower (supported on the houlder 5), the ratchet pawls click along the ratchet teeth 24* and these, therefore, fasten the ram in its new packing, compressing position. Thereafter the operation of the plunger can be reestablished, and during this time the packing will bear tightly against the tube face to make a tight oint. Various modifications and changes may be resorted-to within the spirit of the in* vention as claimed.

\Vhat is claimed is: 1. A pump plunger including a central tubular member, a shell surrounding and attached to said member and providing an open top chamber for the reception of a packing medium which is adapted to be expressed from said chamber to ex and outwardly against a contiguous sur ace in a pump tube, and means for expressing the packing medium from the said shell when said means is held at rest and the plunger is lowered relatively.

2-. A pump plunger including a central tubular member, a shell surrounding said member and providing a chamber for the reception of a packing medium which is adapted to be expressed from said chamber to expand outwardly against" a contiguous surface in a pump tube, and means for exing the packing medium from the said shell,

said meanslincluding a follower device extending below the central tubular member and adapted to engage an abutment whereby a relative movement is produced between the expanding means and the plunger proper, and means operative during such relative I movement to lock the expanding means and the plunger member against vmovement in. one direction. 1

4. A plunger having a shell formmgan annular packing chamber, a pipe sectionv therein, packing arranged in said chamber and exposed for outward expansion agalnst a tube in which the plunger shell works,

and means for expressing the packing upwardly from the saidchamber. l

5. In a pump, a plunger having an annular acking chamber, a pipe section therein,

p'ac ing arranged in said chamber and exposed for outward expansion against a tube in which the plunger works, and means act ing upwardly against the packing to express it from said chamber when the plunger is lowered.

6. In a pump, a plunger having an annular packing chamber, a pipe section therein,

packing arranged in said chamber and ex posed for outward expansion against a tube in which the plunger works, means acting upwardly against the packing to express it from said chamber when the plunger is lowered, and means for thrusting the expressed packing outwardly against the tube.

7 In a pump, a plunger having an annular packing chamber, packing surrounded by a wall of said chamber and being exposed above' said wall, and means for pushing the packing upwardly in said chamber.

8. In a pump, a plunger having an annular packing chamber, packing surrounded by a wall of said chamber and being exposed above said wall, and means for pushing the packing upwardly in said chamber, said means being operative while the plunger has relative movement thereto.

9. In a pump, a plunger having an annular packing chamber, packing surrounded by a wall of said chamber and being exposed above said wall, and a ram including a ring and an abutment device for pushing the packing upwardlyin said chamber, said ram bein operative while the plunger has relative dbwnward movement. 10. In a pump, a plunger having an annular packing chamber, a body of packing therein, a cup-like wall around the packing, and means associated with the plunger and operative upon relative and opposite move- 'ment of the plunger to express the packing out of the cap and compress the said packing against the contiguous pump tube, the packing being expressed by the weight of .the plunger while said means is held stationary. a

11. In a ump, a plunger having an annular body ofpacking and a containertherefor, and a ram slidably and lockably associated with the plunger and operative upon relative downward movement of the plunger to compress in said packing against the contig ous pump tube, the packing being expressed y. the weight and downward movement of the plunger while said ram is held stationary. r g a 12. In a pump including a tube and a plunger reciprocable inthe tube, a support at the bottom of the tube, a cup-like pocket plunger is moved downwardly below normal.

position. l

13. In a pump, a plunger having an annular body of packing and an open top container therefor, and means associated with said plunger and adapted to be lowered with the plunger into the well hole and recipro- 15 cate in pumping, therewith, and adapted to engage a fixed abutment in the bottom of the well, and remain stationary while the plunger is moving relatively down,

whereby the packing in the plunger is 20 expressed from its container by the weight of the plunger while the said means rests stationary on the abutment.

In testimony whereof I have signed my name to this specification.

HENRY M. GREEN. 

